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Exercise guide

V Flutter Kick

  • Intermediate
  • Isolation
  • Rep-based
  • Waist

The V Flutter Kick is a dynamic core exercise that targets the lower abdominals and hip flexors while challenging stability through an isometric hold in a V-sit position. It builds core endurance and improves hip mobility by requiring constant tension throughout the midsection.

Reviewed by the Crucible team · Updated June 2026

Watch the V Flutter Kick demonstrationGuided video and your full workout live in the Crucible app.

Muscles worked

Primary

  • Abs
  • Obliques

Secondary

  • Hip flexors

Equipment

  • Body weight

Setup

  1. Sit on the floor with your legs extended straight in front of you.
  2. Lean your torso back to a 45-degree angle, engaging your core to maintain a straight spine and 'V' shape.
  3. Place your hands on the floor beside your hips for balance, or lift them off the ground for an increased challenge.
  4. Lift both feet 6-10 inches off the floor, keeping your legs fully extended and toes pointed.

How to do it

  1. Begin alternating small, rapid up-and-down kicks with your legs, moving from the hips rather than the knees.
  2. Maintain a steady, rhythmic breathing pattern, avoiding holding your breath during the movement.
  3. Keep the kicks controlled and within a 6-12 inch range of motion to maintain constant tension.
  4. Continue the alternating pattern for the duration of the set while keeping the torso perfectly still.

Form checklist

  • Keep your chest lifted and shoulders back to prevent rounding the spine.
  • Ensure your knees remain locked and legs stay straight throughout the set.
  • Maintain a braced core to protect the lower back and prevent it from arching.
  • Keep the movement originating from the hip joints, not the ankles.

Pro tips

  • Focus on 'pinching' your lower abdominals to drive the leg movement, which helps shift focus away from overactive hip flexors.
  • The higher you lift your torso, the easier the exercise; lean further back while keeping a flat back to increase the lever length and difficulty.

Make it harder

  • Perform the movement with your arms extended overhead to shift your center of gravity and increase the demand on the upper abs.
  • Add ankle weights to increase the resistance on the quadriceps and lower abdominal wall.

Frequently asked

What muscles does the v flutter kick work?
The v flutter kick primarily targets the abs and obliques, and also works the hip flexors as secondary muscles.
What equipment do you need for the v flutter kick?
The v flutter kick requires no equipment — just your body weight.
Is the v flutter kick good for beginners?
The v flutter kick is rated intermediate. Build a base with simpler variations first, then progress to it with light load and strict form.

Related exercises

  • 3/4 Sit-UpBeginner · abs and obliques
  • 45 Degree Bicycle Twisting CrunchIntermediate · abs and obliques
  • 45 Degree Lean Back Alternate Knee RaiseBeginner · abs and obliques
  • 45 Degrees Arms PlankIntermediate · abs, deltoids, obliques, and pectorals

Train this with a plan, not guesswork

Crucible builds the v flutter kick into a precise program around your body, equipment, location, and time.

Download on the App Store